https://scholars.lib.ntu.edu.tw/handle/123456789/432835
Title: | Effects of bifunctional linker on the optical properties of ZnO nanocolumn-linker-CdSe quantum dots heterostructure | Authors: | Zeng T.-W. Liu I.-S. Huang K.-T. Liao H.-C. Chien C.-T. Wong D.K.P. Chen C.-W. Wu J.-J. Chen Y.-F. YANG-FANG CHEN WEI-FANG SU CHUN-WEI CHEN |
Issue Date: | 2011 | Journal Volume: | 358 | Journal Issue: | 2 | Start page/Pages: | 323-328 | Source: | Journal of Colloid and Interface Science | Abstract: | We study the effects of bifunctional linker on the optical properties of ZnO nanocolumn-linker-CdSe quantum dots heterostructure. The CdSe quantum dots are anchored on the surface of ZnO nanocolumns through either aliphatic linker of 3-aminopropyl trimethoxysilane (APS) or aromatic linker of p-aminophenyl trimethoxysilane (APhS). X-ray photoelectron spectroscopy is used to confirm the bifunctional linker bound onto CdSe quantum dots and onto the ZnO nanocolumns. The TEM study reveals a CdSe quantum dot shell of about 15. nm coated on the ZnO nanocolumns. The photoluminance (PL) spectroscopy and time-resolved PL spectroscopy of ZnO nanocolumn-linker-CdSe quantum dots reflects that the photo-induced electron transfer across the interface of ZnO and CdSe through the aromatic APhS is more efficient than the aliphatic APS. This study demonstrates that through the usage of appropriate surface linker, the charge transfer rate across the interfaces of donor/acceptor (D/A) heterostructure can be improved for potential photovoltaic cell applications. © 2011 Elsevier Inc. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-79955083012&doi=10.1016%2fj.jcis.2011.03.002&partnerID=40&md5=5ab1de789d1a461df04cceef605ce0ff https://scholars.lib.ntu.edu.tw/handle/123456789/432835 |
ISSN: | 00219797 | DOI: | 10.1016/j.jcis.2011.03.002 | SDG/Keyword: | 3-aminopropyl trimethoxysilane; Aromatic linker; Bifunctional; CdSe quantum dots; Charge-transfer rate; Heterostructures; Linker; Nano-columns; Nanocolumn; Photo-induced electron transfer; PL spectroscopy; Quantum dot; Surface linker; TEM; Time-resolved; Trimethoxysilane; ZnO; Aromatic compounds; Cadmium alloys; Cadmium compounds; Charge transfer; Ion exchange; Optical properties; Photovoltaic cells; X ray photoelectron spectroscopy; Zinc oxide; Semiconductor quantum dots; 3 aminopropyltrimethoxysilane; 4 aminophenyltrimethoxysilane; cadmium selenide; quantum dot; silane derivative; unclassified drug; zinc oxide; article; chemical structure; electron transport; optics; photoluminance spectroscopy; priority journal; spectroscopy; surface property; transmission electron microscopy; X ray photoelectron spectroscopy |
Appears in Collections: | 材料科學與工程學系 |
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